... weght: 20kgProjector weight: 4.5kgComputer weight: 2kgSpeaker: 1.8kgComputer Configurationmain board: Ion330graphics: 940notebook1G800DDR2WD 160G 25SARAluminum CasePOWER:QUANWEI120WAdapter:12V-10AElectronic whiteboard parameters ... of work :150 hoursOperatingSystem: windows2000,WindowsXP, Windows7 interactive whiteboard,digital smart board,presentation equipment,projection screen,educational supplies